Pr od uct io n Ne tw ork Ar ch it ect ur es an d Web Lo gic SI P S er ver Con f igu ra t ion
When using multiple NICs to support different subnets, you must configure multiple network on
the server for each different NIC as described in “Multihomed Servers Listening on Multiple
Subnets” on page 2-6.
Multihomed Servers Listening On All Addresses (IP_ANY)
The simplest multihome configuration enables a WebLogic SIP Server instance to listen on all
available NICs (physical NICs as well as logical NICs), sometimes described as IP_ANY. To
accomplish this, you simply configure a single network channel and specify a channel listen
address of 0.0.0.0.
Note that you must configure the 0.0.0.0 address directly on the server’s network channel. If you
specify no IP address in the channel, the channel inherits the listen address configured for the
server instance itself. See “Configuring Engine Servers to Listen on Any IP Interface (0.0.0.0 or
::)” on page 1-10.
Multihomed Servers Listening on Multiple Subnets
Multiple NICs can also be used in engine tier servers to listen on multiple subnets. The most
common configuration uses WebLogic SIP Server to proxy SIP traffic from one subnet to another
where no direct access between subnets is permitted. Figure 2-3 shows this configuration.
2-6
Configuring Network Resources